.gb_square {
    width: 37px;
    height: 37px;
    float: left;
    /* border: 1px solid gray; */
    line-height:37px;
    cursor: pointer;
}
.gb_black {
    background: url("~@/assets/images/b.png") no-repeat center;
    background-size: 30px;
}
.gb_write {
    background: url("~@/assets/images/w.png") no-repeat center;
    background-size: 30px;
}
.gb_checkerboard {
    width: 100%;
    height: 100%;
    background: url("~@/assets/images/board-0.png") no-repeat center;
    padding-top: 8px;
    box-sizing: border-box;
    position: relative;
}
.redPoint {
    position: absolute;
    width: 8px;
    height: 8px;
    background-color: rgba(255, 0, 0, 0.6);
    border: 1px solid rgba(0, 0, 0, 0.2);
    border-radius: 50%;
}
